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GW230712_090405 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW230712_090405

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW230712_090405

Both component-mass lower bounds exceed 3 solar masses

Primary mass32 M☉

Secondary mass12.5 M☉

ObservedJul 12, 2023

Event identity

Classification and release

ID: gwtc:GW230712_090405
Event name: GW230712_090405
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-4.1
Preferred event version: v2
Observed at: Wednesday, July 12, 2023 at 9:04:05 AM UTC UTC
GPS time: 1,373,187,863.9

Source-frame posterior

Component and remnant masses

Primary mass: 32 (-10, +16) M☉
Secondary mass: 12.5 (-5.2, +15.3) M☉
Remnant mass: 44 (-10, +21) M☉
Effective spin: -0.02
Network SNR: 9.5

Propagation

Distance and statistical context

Luminosity distance: 2,000 (-1,000, +2,400) Mpc
Redshift: 0.37
Astrophysical probability: 0.99
False-alarm rate: 0.018

Provenance

Official source record

GWOSC · GWTC-4.1

GW230712_090405

Last synchronized 9/12/2026, 3:20:17 AM UTC.

JSON record GWOSC event page